I am investigating the application of gases dissolved in liquid metals for increasing the electrical resistivity of a liquid metal-gas solution.
Many data on the solubility of gases are often specified in weight percentages, (wt%). For example, the solubility of nitrogen in liquid iron at...
Eddy currents are induced in a nonferromagnetic piece of metal conductor, e.g. aluminium or copper, when it is placed next to a conductor with high frequency AC. A magnetic field opposite to the 1. field is produced in the metal, ("mirroring"), therefore producing a repulsive force, which in...
Does anyone know a way to calculate the magnetic field acting on a wire, when this wire is placed in the center of a bigger hollow wire?
I have the outer and inner diameter of the hollow wire, the diameter of the wire in the center (this two values define the radial distance between the...
I'm looking for a way to calculate the additional energy consumption of an electrical device, if the same current used for the device has to run through a wire with a given length, diameter and resistance, before reaching the device.
As an example, take a lamp with an energy consumption of...
I am looking for a method and calculation parameters for preventing net evaporation of a hot static fluid in a closed box. The aim is to keep the fluid (or at least a certain amount of it) in its liquid state.
I'm not very familiar with thermodynamic calculations, but I suppose that the...
I am trying to find out whether the following magnetic confinement could be realized:
Can a straight wire, while conducting current, magnetically be forced to stay in a certain position inside of an area surrounded by several permanent magnets, without being attracted to touch any of the...
I need to calculate the temperature rise of the cold side in a microheat barrier (vacuum insulating) system. The constant temperature of the heat source (hot side) would be 760 deg.C, the initial cold side temperature is RT 25 deg.C and the overal thermal conductivity of the thermal barrier is...
I need to find a material that is as stiff as possible (bending stiffness). For the calculation in my application I want to find out how much stiffer a material is compared to steel.
Tungsten carbide, silicon carbide or Al2O3 for example have a higer young's modulus. 3.6 x, 2.5 x and 1.8 x...
I am looking for a simple method to form a gel close to RT out of liquid paraffin or similar high thermal expansion fluids.
The gel would work as a thermal actuator by expanding when heated. It's consistency should be similar to candle-gels or at least a stiff cream. It doesn't necessarily...
Does anyone know how to convert the value of volumetric thermal expansion into linear expansion, when the fluid is constrained in a channel?
I'm searching for fluids for a microactuation device, in which a linear micron-sized deflection is produced by the pressure of linear expansion. The...
I am looking for high precision linear bearings with low radial runout and clearance. Accuracy in the axial direction is less important for my application.
I am still inexperienced in this range but I could imagine that a linear bearing, eg. ball bearing, would work in the same way as a...
I need to calculate the minimum size of a magnet necessary to lift up tiny iron platelets at a large distance (40 cm) over an area of 1 square meter.
The platelets of 0.4 x 0.4 mm and 0.01 mm thickness weight 1.6 micro-grams. They lay uniformly distributed on a horizontal flat of 1m x 1m, each...
